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Finding the Fourth Proportional to 158,302.22, 218,462.01 and 86,689.04

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Solution

The fourth proportional to 158,302.22, 218,462.01 and 86,689.04 is: 119,633.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,302.22 : 218,462.01 = 86,689.04 : x
  2. Step 2: Convert to fraction form
    158,302.22/218,462.01 = 86,689.04/x
  3. Step 3: Cross multiply
    158,302.22x = 218,462.01 × 86,689.04
  4. Step 4: Simplify right side
    158,302.22x = 18,938,261,923.37
  5. Step 5: Solve for x
    x = 18,938,261,923.37/158,302.22
  6. Step 6: Final answer
    x = 119,633.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.